Sewing-machine power-bench.



LHALL.

SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB-21. l9l5.

Patented May 2, 1916. j 5 SHEETS-SHEET 1.

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J. HALL.

SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB.27. I915.

1,181,523. Patented May 2,1916.

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SEWING MACHINE POWER BENCH.

APPLICATION FILED 8.27.1915.

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j. HALL.

SEWING MACHINE POWER BENCH.

APPLICATION mm 5.21. 1915.

1,181,523. Patented May 2,1916.

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SEWING MACHINE POWER BENCH.

APPLICATION FILED FEB. 27. 1915.

Patented May 2,1916.

5 SHEETS-SHEET 5 UNITED STATES PATENT OFFICE.

JAMES HALL, OF GUIDE BRIDGE, NEAR MANCHESTER, ENGLAND, ASSIGNOR T0 JONESSEWING MACHINE COMPANY, LIMITED, OF GUIDE BRIDGE, NEAR MANCHESTER,

ENGLAND.

SEWING-MACHINE POWEKBEN CH.

Specification of Letters Patent.

Patented May 2, 1916.

To all whom it may concern:

Be it known that I, JAMEs HALL, a subject of the King of Great Britain,residing at Guide Bridge, near Manchester, in the county of Lancaster,England, have invented certain new and useful Improvements inSewing-Machine Power-Benches; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to improvements in that type of sewing machinepower benches in which a number of sewing machines are employed upon thebench, driven direct from a continuous shaft coupled together insections which passes through the various transmitting pulleys andfriction clutch members connected therewith so arranged that any of themachines may be stopped or started without affecting the adjacentmachines, and when any particular machine is stopped, the pulley whichdrives that ma chine will also be stopped, and all moving parts arefully incased so that there is no risk of accident to the operatorworking the machine.

My invention has chiefly for its object in the first place, to providemeans whereby the said shaft is so journaled or mounted that thefriction clutch drive will work with a minimum loss of power and thewear will be equally divided between the driven friction clutch pulleyand the driving shaft, in lieu of being continuous on the latterthroughout as hitherto has been the case. Further, the said drivenfriction clutch pulley may be so constructed as to be capable ofcarrying pulley rims of various diameters, to permit of driving thesewing machines at different speeds and the hub or boss of the pulleywhich carries the said rims I may groove to form itself one of the saidpulley. rims.

My invention has chiefly for its object in the second place to soarrange the said protecting casings that they may be fixed or detachedwithout interfering with or the necessity of taking down any of thedriving arrangements.

I attain these objects by the mechanism illustrated in the accompanyingfive sheets of drawings, in which Figure 1 is an elevation, Fig. 1* aperspective View of a detail, Fig. 2 a plan, and Fig. 3 a longitudinalsection of a power bench transmitter and easing enshrouding the sameconstructed in accordance with one embodiment of my invention. Figs. 4and 5 are sectional end views of the transmitter casing. Fig. 6 is anelevation, Fig. 7 a plan, and Fig. 8 a longitudinal section of a powerbench transmitter and easing enshrouding the same constructed inaccordance with another embodiment of my invention. Figs. 9 and 10 aresectional end views of the transmitter casing. Fig. 11 is an elevationof a sewing machine power bench provided with a plurality of thetransmitters shown on Sheet 1.

Similar letters refer to similar parts throughout the several views.

Referring to the figures generally, the bench a is mounted uponstandards or legs b which are of ordinary construction and spaced asuitable distance apart, each section carrying a sewing machine.

Referring to Sheets I and II, according to one embodiment of myinvention, to the cross rail a, which is bolted to the upper portion ofthe standards 6, I secure a bracket 0 having a two part boss d in whichis journaled the boss 6 of a driven clutch pulley f in which runs thedriving shaft 9, which extends forward and is coupled up to the othertransmitters or friction clutch devices h, f, spaced along the bench asshown in Fig. 11. The boss of the driven clutch pulley f is bored so asto fit and form a bearing for the driving shaft 9 which extends throughit forward to the next transmitter or friction clutch device. On thisshaft, alongside the driven clutch pulley f, is secured the drivingclutch disk h which revolves continuously with the shaft 9 and betweenthe said driven clutch pulley and clutch disk a coiled spring i isemployed. Pivoted to the bracket 0 is a lever is which is arranged topress onto the end of the boss 6 of the driven clutch pulley f, throughthe medium of an anti-friction ball case Z interposed between the end ofthe boss 6 and the lever 70. The lever is is connected by a wire m to anordinary treadle plate (not shown) secured to the floor and pressed bythe foot of the operator.

WVhen the sewing machine is required to be put in operation, the leveris actuated so as to move the driven clutch pulley f toward and bringthe same in driving contact withthe driving clutch disk It secured onthe driving shaft g. The bracket 0 is also provided with a circularbraking face n, positioned so as to face a similar braking face 0 on thedriven clutch pulley f which may consist of a rim of leather or similarmaterial. Immediately the pressure is taken away from the said treadleplate by the operator, the driven clutch pulley f is pressed back by thespring i which causes the driven clutch pulley f to come in contact withthe braking face n on the bracket 0 and thereby to be stoppedimmediately. The bracket 0 is also provided with a second boss 29through which the driving shaft 9 passes. Beyond this boss is placedanother anti-friction ball case Q, adjacent to the back face of the saidboss and behind this boss a collar '7 is secured to the driving shaft 9.This arrangement prevents the driving shaft g from moving laterally whenpressure is applied by the lever In to bring the driven clutch pulley fin contact with the driving clutch disk It. The anti-friction ball casesZ, q will take up all lateral thrust caused by the clutch drive and thusenable the latter to work with a minimum loss of power. Anotheradvantage of this arrangement is that when the driven clutch pulley f isbrought into contact with the driving clutch disk h, the whole isjournaled or run on the boss or bearing d of the driven clutch pulley fwhile immediately the driving clutch disk h is released from the drivenclutch pulley f, the latter ceases to run and the driving shaft 9 runsin the bearing formed by the boss e of the driven clutch pulley f.Hence, as a great proportion of the operators time is taken up byarranging the work, it will be readily seen. that the wear will beequally divided between the driven clutch pulley f and the driving shaftg.

The driven clutch pulley f and driving clutch disk It I inclose by acasing s secured underneath the sewing machine bench which casing isopen at the top and has a slot 15 in the right and a slot in in the lefthand side. See also Fig. 11. The said slots are made wide and deepenough to respectively admit the adjacent boss (Z and end of the bracket0 and the driving shaft 9 and when it is desired to remove the casing toallow of readily withdrawing it after having unscrewed it from thesewing machine bench.

The lower end of the slot u is formed with an annular rim 2) open at thetop and adapted to carry one end of a longitudinally divided tubularcasing 11;, see Fig. 1* enshrowding the driving shaft between thetransmitters or friction clutch devices, the other end of the saidtubular casing being carried by an annular rim 1 on the boss .2 of thebracket 2 in which the end of the driving shaft 9 is mounted, while theend of the next sectional tubular casing to is carried by an annular rimat on the second boss 19 of the bracket 0.

Referring to Sheets III and IV, according to another embodiment of myinvention, I may construct the hub or boss (2 of the driven clutchpulley 7' so as to carry or be provided with pulley rims of variousdiameters, see more particularly Fig. 8, to permit of driving the sewingmachine at different speeds and the hub or boss 0 which carries the saidrims I may groove as shown to form itself one of the said pulley rims.For; this purpose the hub or boss 6 is formed with a flange 10 to whichthe said pulley rims are secured by screws 12. In this embodiment, thedriven clutch pulley f has its boss 6 also journaled in the boss (Z ofthe bracket 0 in which runs the driving shaft 9 and the driving clutchdisk It is also secured upon the driving shaft g. The boss J of thebracket 0 is also formed with a circular braking surface nand the drivenclutch pulley f with braking faces 0 of leather or similar material. Thespring located in the former embodiment between the driven clutch pulleyf and the driving clutch disk It I dispense with in the present instancewhile the boss e of the said driven clutch pulley f I extend somedistance beyond the boss (Z of the bracket 0 in which it is journaled.The extended part is reduced in diameter so as to form a shoulder 13against which abuts an antifriction ball case q while on the free end ofthe said extended part is secured a longitudinally adjustable collar 1",between which and the anti-friction ball case 9 engages the lever ispivoted to the boss at of the said bracket 0, which lever I place underthe influence of a spring 14:.

hen it is desired to operate the sewing machine, the lever I: isactuated by the usual foot pedal (not shown) and thereby pressed againstthe anti-friction ball case 9 which causes the driven clutch pulley f tobe forced into driving contact with the driving clutch disk It securedon the driving shaft g and be rotated thereby while when releasing thesaid foot pedal, the spring 14 will cause the lever A; to press againstthe collar r on the extended hub or boss part e and thereby bring thedriven clutch pulley f out of v the sewing machine inoperative. Thisbackward movement of the driven clutch pulley 7' causes it to be pressedagainst the braking face a and thus stop instantly as is the case in theformer embodiment described. The bracket or is also provided with asecond boss see also Fig. 11 which carries one end of the sectionaltubular casing to through which the driving shaft 9 extends to theadjacent transmitter or friction clutch device while the other end ofthe sectional tubular casing is carried by the boss "(1 of the casing sinclosing the latter. In this instance the end of the tubular casing wadjacent to the end bracket 2 is carried by means of a cap 11 fittedonto the boss of the bracket In this embodiment the driving shaftbracket employed at the end of the sewing machine bench is provided withan anti-friction ball case 15 located between the end of the boss 2 anda collar 16 secured on the driving shaft 7 and adapted to take up theend thrust eX- crted on the driving shaft 9 when the lever ll? isactuated to bring the driven clutch pulley into driving contact with thedriving clutch disk h secured on the driving shaft 9. The casing s inthis case may be such as described in the former embodiment or formed soas to cover only the front part of the transmitter or clutch device asshown and have in one side a slot u to permit of removing it sidewise.

I claim:

1. In a sewing machine power bench in combination. a hanger bearing, adriven clutch pulley with boss journaled in the said bearing andperipheral driving means. a driving shaft longitudinally stationaryjournaled in said driven clutch pulley. a driving clutch disk adjacentto the said driven clutch pulley secured to and rotating with the saidshaft, the ends of the latter extending beyond the said clutch disk andpulley to permit of rotating by the said shaft a series of the saidclutch disks and pulleys in alinement thereon and means in operativeconnection with the rear end of the boss of the said driven clutchpulley for bringing the driven clutch pulley into contact with the saiddriving clutch disk.

2. In a sewing machine power bench in combination, a plurality of hangerbearings, a driven clutch pulley with boss journaled in each of the saidhanger bearings and peripheral driving means, a driving shaft journaledin and extending through all of the said driven clutch pulleys, adriving clutch disk adjacent to each of the said driven clutch pulleyssecured to and rotating with said shaft, and means in operativeconnection with the rear end of each of the bosses of the said drivenclutch pulleys for bringing the said driven clutch pulleys independentlyin and out of contact with the said drii'ing clutch disk.

3. In a sewing machine power bench in combination. a hanger bearing, adriven clutch pulley with boss journaled in the boss of the said bearingand peripheral driving means. a driving shaft journaled in the boss ofthe said driven clutch pulley. a driving clutch disk secured to the saidshaft and adapted to rotate independently from the said driven clutchpulley, the ends of the shaft extending beyond the said clutch disk andpulley to permit of rotating by the said shaft a series of the saidclutch disks and pulleys in alinement thereon, and a lever pivoted tothe said bearing and with upper end in operative connection with the rcar end of the boss of the said driven clutch pulley to bring the saiddriven clutch pulley in and out of contact with the said driving clutchdisk.

l. In a sewing machine power bench in combination. a bearing, a drivenclutch pulley journaled in the said bearing with boss extendingrearwardly through the said bean ing, two collars fixed on the saidextended boss, a shaft journaled in the said driven clutch pulley withboth ends extending through and beyond it, a driving clutch disk securedto the said shaft, a lever pivoted to the said bearing and with upperend located between the said two collars to move the said driven clutchpulley in and out of contact with the said driving clutch disk.

5. In a sewing machine power bench in combination, a hanger bearing, adriven pulley with boss journaled in the said bearing and peripheraldriving means, the said bearing having in front a braking face and thesaid pulley being provided on its face adjacent to the said bearing witha brake rim to come into contact with the said braking face, a drivingshaft journaled in the said driven clutch pulley, a driving clutch disksecured to the said shaft and adapted to rotate independently from thesaid driven clutch pulley, the ends of the said shaft eX- tending beyondthe said clutch disk and pulley to permit of rotating by the said shafta series of the said clutch disks and pulleys in alinement thereon, anda lever pivoted to the said bearing and its upper end adapted to pressthe said driven clutch pulley alternately into contact with the drivingclutch disk and the said braking face to instantly stop the rotation ofthe said driven clutch pulley.

6. In a sewing machine power bench in combination. a hanger bearing, adriven clutch pulley with boss ournaled in the said hanger bearing, arim with peripheral driving means rendered interchangeable on the bodyof the said driven clutch pulley and the said body havingcircumferentially a groove adapted to receive the driving band when thesaid rim has been removed, a driving shaft longitudinally stationaryjournaled in the said driven clutch pulley, a driving clutch diskadjacent to the said driven clutch pulley secured to and rotating withthe said shaft, the ends of which eX- tend beyond the said clutch diskand pulley to permit of rotating by the said shaft a series of the saidclutch disks and pulleys in alinement thereon.

7. In a sewing machine power bench in combination, a plurality ofseparate hanger bearings, a driven clutch pulley with boss journaled ineach of the said bearings and peripheral driving means, a driving shaftjournaled in each of the said driven clutch pulleys, a driving clutchdisk secured to the said shaft adjacent to each of the said drivenclutch pulleys. the ends of the said shaft extending beyond the saidclutch disk and pulley to permit of rotating by the said shaft a seriesof the said clutch disks and pulleys in alinement thereon, a casing co"-ering said driven clutch pulley and driving clutch disk. a laterallyextending boss on the said bearing, a casing covering the said shaft andcarried at one end by the said laterally extending boss and a boss onthe side of the adjacent clutch casing for carrying the other end of thesaid sectional tubular casing.

8. In a sewing machine power bench in combination, a plurality ofseparate hanger bearings, a driven clutch pulley ournaled in each of thesaid bearings, a driving shaft journaled in each of the said drivenclutch pulleys, a driving clutch disk secured to the said shaft adjacentto each of the said driven clutch pulleys, the ends of the said shaftextending beyond the said clutch disk and pulley to permit of rotatingby the said shaft a series of the said clutch disks and pulleys inalinement thereon, a casing cov ering the said driven clutch pulley anddriw ing clutch disk, a laterally extending boss on said bearing, a:asing covering the said shaft and carried at one end by the saidlaterally extending boss and a boss on the side of the adjacent clutchcasing for carrying the other end of the said casing.

Signed at Manchester, England, this 16th day of. February. 1915.

J AMES HALL.

'itnesses FERDINAND B, Bossirmo'r, STANLEY E. BRAMALL.

Qopies 01 this patent may be obtained for five cents each, by addressingth Commissioner of Patents, Washington, D. 0."

